Lawn trimming device



Dec. 13, 1932. E. A. GAST LAWN TRIMMING DEVICE Filed Jan. 13, 1932dimmig w fll'forny.

Patented Dec. 13, 1932 UNI-TED STATES PATENT OFFICE ERNEST ALBERT GAST,OF CINCINNATI, OHIO LAWN TRIMMING nnvron Application filed January 13,1932. Serial No. 586,261.

provide a simple, eiiicient and inexpensive tool whereby the edging of alawn along a walk or similar area may be accomplished with a minimumexpenditure of time, effort, and labor.

Further objects of my invention will appear from the following detaileddescription thereof.

In the drawing:

Figure 1 is a top view of my invention.

Figure 2 is a perspective of the device showing same in operation.

The numeral 1 indicates a frameconstructed of metal or other suitablematerial. The frame 1 consists of end sections 2 and 3 and an obliquesection 4. The section 2 is bent at right angles to form a section 5which terminates in a short section 6 parallel with section 2. Thesections 2 and 6 provide bearings for a shaft 7, the outer end of whichhas rigidly secured thereto a pinion 8. Secured in the section 5 is astud 9 which serves as an axis for a traction wheel 10. The inner faceof the wheel 10 is provided with gear teeth 11 arranged to intermeshwith pinion 8.

Threaded into the section 3 of the frame is a bolt 12, and onto the endof the bolt 12 a socket bearing 13 is threaded. The shaft 7 is tubularand the inner end is notched as shown at 14. Mounted in the bearing 13and the tubular shaft 1 1 is a brush 15 the ends of the core 16 of saidbrush extending respectively into the bearing and shaft. A stud 17formed by one of the wires of the core being bent at the end engages ina notch 1 1 so as to cause the brush to rotate with shaft 7.

Mounted on the oblique section 4 of the frame are cutters 18, theseconsisting preferably, though of course not necessarily, of discardedsafety razor blades. It is also apparent that where the blade isspecially constructed for the device a single blade may provide theentire cutting edge.

Secured to the section 2 of the frame by means of bolts 19 is a bracket20 to which a handle 21 is secured.

The operation and use of my device are as follows:

The operator pushes the device with the traction wheel 10 riding alongthe edge of the walk 22, or other structure beside which the grass is tobe trimmed. Rotation of the trac tion wheel operates the brush 15 in thecounter clockwise direction as'viewed in Figure 2. The brush duringrotation raises the grass along the edge of the walk and brushes ittoward and against the cutter 18 and holds it securely enough for thecutting edge to sever it. The device thus trims the grass neatly alongthe edge at the walk level.

Insofar as the operator is concerned, the work involves on his partmerely the pushing of the device. In this no stooping or other irksometoil are involved, and the great expenditure of time, effort, andlaborhereto fore incident to the trimming of such edges is thus obviated.

Aswill be seen the cutting edge of the device may be readily renewed atanytime merely by changing the blades 18, of which the average personhas normally a constantly renewed supply in the form of discarded safetyrazor blades.

hen the brush 15 becomes too much worn or it is desired to changeblades, the brush may be readily removed merely by unscrewing the bolt12 a short distance which withdraws the bearing 13 so that the brush maybe taken out and a new one inserted.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is:

1. A device of the character specified comprising a frame, a cuttercarried by said frame, a non-cutting member movably mounted in saidframe, and means for the movement of said member, whereby objects to beout are moved against said cutter.

2. A device of the character specified com prising a frame, a cuttercarried by said frame, a brush rotatably mounted'in said frame, atraction wheel mounted on said frame, and means whereby the rotation ofsaid wheel is arranged to rotate said brush to move objects to be outagainst said cutter.

3. A device of the character specified comprising a frame, a cuttercarried by said frame, a brush rotatably mounted in said frame, saidcutter being disposed obliquely relative to said brush, a traction wheelmount ed on said frame, and means whereby the rotation of said wheel isarranged to rotate said brush to move objects to be out against saidcutter.

4. A device of the character specified comprising a frame, a cuttercarri s by said frame, a brush rotatably mounted in said frame, atraction wheel mounted on said frame, means whereby the rotation of saidwheel is arranged to rotate said brush to move objects to be out againstsaid cutter, and a handle for the operation of the device.

5. A device of the character specified comprisin a frame, a cuttercarried by said frame, a brush rotatably mounted in said frame, saidcutter being disposed obliquely relative tosaid brush, a traction wheelmounted on said frame, means whereby the rotation of said wheel isarranged to rotate said brush to move objects to be cut against saidcutter, and a handle for the operation of the device.

6. A device of the character specified, com prising a frame consistingof an oblique section andparallel sections at the ends of said obliquesection, a cutter carried by said oblique section, a brush rotatablymounted between said parallel sections, a traction wheel. mounted onsaid frame, and means whereby the rotation of said wheel is arranged torotate said brush to move objects to be out against said cutter.

7. A device of the character specified, com prising a frame consisting;of an oblique section and parallel sections at the ends of said obl quesection, a cutter carried by said oblique section, a. brush rotatablymounted between said parallel sections, a traction wheel mounted on saidframe, and means whereby the rotation of said wheel is arranged torotate said brush to move objects to be cut against said cutter, and ahandle for the operation of the device.

8. A device of the character specified, com prising a frame, a safetyrazor blade secured to said frame, a brush rotatably mounted in saidframe, a traction wheel mounted on said frame, and means whereby therotation of said wheel is arranged to rotate said brush to move objectsto be out against said b ades.

9. A device of the character specified comprising a frame, a safetyrazor blade secured to said frame, a brush rotatably mounted in saidframe, said razor blade being disposed obliquely relative to said brush,a traction wheel mounted on said frame, and means whereby the rotationof said wheel is arranged to rotate said brush to move objects to be cutagainst said blades.

10. A device of the character specified comprising' a frame, a safetyrazor blade secured to said frame, a brush rotatably mounted in saidframe, a traction wheel mounted 011 said frame, means whereby therotation of said wheel is arranged to rotate said brush to move objectsto be out against said blades, and a handle for the operation of thedevice.

11. A device of the character specified com prising a frame, a safetyrazor blade secured to said frame, a brush rotatably mounted in saidframe, said razor blade being disposed obliquely relative to said brush,a traction wheel mounted on said frame, means where by the rotation ofsaid wheel is arranged to rotate said brush to move objects to be outagainst said blades, and a handle for the operation of the device.

12. A device of the character specified, comprising a frame consistingof an oblique section and parallel sections at the ends of said obliquesection, a safety razor blade secured to said oblique section, a brushrotatabiy mounted between said parallel sections, a traction wheelmounted. on said frame, and means whereby the rotation of said wheel isarranged to rotate said brush to move objects to e out against saidblades.

13. A device of the character specified, comprising a frame consistingof an oblique section and parallel sections at the ends of said obliquesection, a safety razor blade secured to said oblique section, a brushrotatably mounted between said parallel sections, a traction wheelmounted on said frame, means whereby the rotation of said wheel isarranged to rotate said brush to move objects to be out against saidblades, and a handle for the operation of the device.

ERNEST ALBERT GAST.

